Premier Oil plc (Premier) is an independent exploration and production company with oil and gas interests in the North Sea, South East Asia and in the Middle East, Africa and Pakistan regions. The Company�s operations are located and managed in three regional business units: North Sea, Asia and Middle East, Africa and Pakistan. Each business unit has production, development and exploration operations. In total the Company manages a reserve and resource base of 527 million barrels of oil equivalent. Average working interest production during the year ended December 31, 2011, was 40.4 thousand barrels of oil equivalent per day. As of December 31, 2011, its proven and probable reserves, was 296 million barrels of oil equivalent. In January 2012, the Company acquired EnCore Oil plc. In July 2013, Premier Oil PLC announced that it has sold 100% interest in wholly owned subsidiary Premier Oil Vietnam South BV (POVS).